package com.starryx.blog.interceptor;

import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

// 登录拦截器
public class LoginInterceptor extends HandlerInterceptorAdapter {
    @Override
    public boolean preHandle(
            HttpServletRequest request,
            HttpServletResponse response,
            Object handler) throws Exception {
        if (request.getSession().getAttribute("user") == null) {    // 如果没有登录，就重定向到登录页面
            response.sendRedirect("/admin");
            return false;   // 拦截
        }
        return true;        // 放行
    }
}
